Information presentation apparatus, and information presentation method and program for use therein

A method comprising the steps of:

• recording original data of a leaked file;
• extracting, from the original data, representations corresponding to information that should be prevented from being leaked;
• extracting representations corresponding to information that should be prevented from being leaked and included in one or more files existing in a recording area to be investigated;
• investigating a degree of association between the file existing in the recording area to be investigated and the original data, based on the representations extracted from each of the afore-mentioned steps;
• and
• presenting information regarding a file created based on the leaked file on the basis of the degree of association.

A program product operable on a computer, the computer comprising the steps of:

• recording original data of a leaked file;
• extracting, from the original data, representations corresponding to information that should be prevented from being leaked;
• extracting representations corresponding to information that should be prevented from being leaked and included in one or more files existing in a recording area to be investigated;
• investigating a degree of association between the file existing in the recording area to be investigated and the original data, based on the representations extracted from each of the afore-mentioned steps;
• and
• presenting information on a file created based on the leaked file on the basis of the degree of association.